119results about How to "Adjustable tension" patented technology

The invention belongs to the technical field of filter presses, and particularly discloses a vertical filter press. The vertical filter press mainly comprises a rack, a filter plate group, a washing device, a hopper and other structural components. Wherein the rack is mainly used for controlling unfolding and folding of the filter plate group, the filter plate group is a main place for solid-liquid separation, the hopper and the washing device are arranged on two sides of the rack and are used for collecting materials and cleaning filter cloth, and the pipeline system is used for connecting the filter press with peripheral corollary equipment. According to the invention, a mode of introducing high-pressure gas to carry out gas extrusion is adopted, solid-liquid separation of slurry and drying of a filter cake are realized in a single cavity, and different from an extrusion mode of a traditional vertical filter press, a diaphragm extrusion link is omitted, compressed air is directly introduced into the cavity, and liquid is separated from the filter cake by using pressure; meanwhile, the high-pressure gas can take away residual liquid on the filter cake so as to dry the filter cake, the structural design is optimized, and the working efficiency is improved.

The invention belongs to the technical field of yarn winding, and discloses a colored spun yarn winding device capable of preventing yarn breakage, which comprises a shell, a processing table is fixed outside the shell, a winding roller is movably connected inside the shell, and through the cooperation of an extension plate, a connecting seat, an air cylinder and other structures, the yarn breakage can be prevented. According to the yarn tension compensation device, the air cylinder is started to extend or contract when the detection assembly detects that the tension of the yarn changes and deviates, the extension of the air cylinder enables the position of the second guide wheel to move upwards, and therefore the tension of the loose yarn is compensated, and the air cylinder pulls the second guide wheel to move downwards when contracting, so that the tension of the loose yarn is compensated. According to the winding tension adjusting device, the tension of the yarn can be adjusted, then the tension of the tight yarn is loosened, the phenomenon that the yarn is broken is prevented, the tension degree can be adjusted when the position of a second guide wheel moves through the sliding design of a second guide block and a machining table, and therefore the purpose that the winding tension degree can be adjusted conveniently through the winding tension adjusting device to prevent the phenomenon that the yarn is broken is achieved.

The utility model discloses a kind of steel wire rope automatic rope winding machines, by setting torsion releasing device, release the torsion generated in the process of winding rope of steel wire rope, prevent the disorder of rope reel caused by torsion of steel wire rope, tension adjusting device, the tension of steel wire rope in the process of winding operation can be adjusted in real time, so that winding is more regular, by increasing the friction of steel wire rope to slow down its speed, reach the purpose of adjusting tension;And rope reel butt joint device realizes automatic lifting transfer of the winding reel and the storage of steel wire rope by lifting mechanism and transmission mechanism, the degree of automation of the in-place, butt joint and rotating action of steel wire rope reel is high, winding is more efficient;While the rope guiding roller, line pressing mechanism and line arranging mechanism arranged between rope reel butt joint device and tension adjusting device, so that the line arranging and winding action cooperation is more smooth, and line arranging mechanism uses positive and negative screw rod to carry out automatic reversing, can realize the orderly storage of steel wire rope, improve the operation efficiency of steel wire rope storage.

The invention belongs to the technical field of freight unmanned aerial vehicle delivery, and relates to an intelligent cabin door system for an unmanned aerial vehicle and a cabin door structure design method. The system comprises a driving system, a reel system, a curtain plate system, a sliding rail unit and a control unit. The control unit is electrically connected with the driving system; the driving system is arranged on the unmanned aerial vehicle body; the curtain plate system is connected with an unmanned aerial vehicle body through the sliding rail unit, the curtain plate system is connected with the reel system, the driving system is in transmission connection with the reel system through a chain wheel transmission structure, and the driving system drives the reel system to rotate so as to drive the curtain plate system to stretch or retract along the sliding rail unit. Opening and closing of the cabin door are realized. According to the invention, the number of moving parts is greatly reduced, the probability of clamping stagnation and wear failure of a mechanical transmission mechanism is fundamentally reduced, and the operation reliability of a cabin door system in harsh operation scenes such as emergency logistics and disaster rescue is remarkably improved.

This invention relates to the field of printing equipment technology, specifically to a method for printing 3D effect patterns based on multi-color overlay, comprising the following steps: S1, placing the workpiece to be printed on a base; S2, aligning the screen with the base, and printing ink onto the workpiece using a squeegee; S3, replacing the screen, and printing again using the squeegee, with multiple overlapping prints creating a 3D effect pattern on the workpiece surface; the screen mentioned in step S2 includes a frame and a mesh fabric. The frame includes two support rods and four telescopic rods. The two support rods are arranged in parallel, and the telescopic rods include a main rod and a secondary rod, with the main rod and secondary rod slidingly engaged; the four telescopic rods are interconnected to form a rectangular frame, with two telescopic rods respectively positioned on the two support rods, and a first magnetic block on each of the main rod and secondary rods. This invention solves the problem of printing quality being affected by screen deformation through the frame, mesh fabric, and adjustment mechanism.

The utility model discloses a woven bag sling machine is with tension adjusting structure relates to woven bag sling technical field, and fixed platform, driving motor, fixed installation has pneumatic lever at fixed platform both ends, pneumatic lever one end swing installation has connecting plate, and fixed platform one end fixed mounting has guide rod. The utility model discloses be provided with connecting plate, push board, limit stop, spring etc., and the limiting operation of guide groove is received to the limit block of push board one end installation, thereby makes the push board both ends of guide rod along the push board of guide rod opposite movement, makes the push board through spring and promotes limit stop, and under the action of spring, limit stop will be on the sling material of floating roll and take -up roll and carry out the limiting operation, thereby solves the woven bag sling material on the unwinding roll and is easy because the rotation inertia of unwinding roll, traction uneven etc. The problem of loose, woven bag deviation in the conveying process.

The utility model discloses a tipping paper slitting machine with anti -wrinkle structure, including frame, the installation seat between one side symmetry of frame is provided with unwinding mechanism, the installation seat between the symmetry of other side is provided with winding mechanism, and the first guide component, tensioning component, leveling mechanism, third guide component and fourth guide component are sequentially arranged between unwinding mechanism and winding mechanism of frame, and the position of fourth guide component is located third guide component far from leveling mechanism one side top, and fourth guide component is close to third guide component one side symmetry and is provided with slitting knife. The tipping paper slitting machine with anti -wrinkle structure, through setting first guide component, electric linear guide rail, tensioning component, second guide component and leveling component collocation uses, can be positioned to tipping paper conveying position, can also adjust the tension, effectively avoid generating the wrinkle simultaneously, guarantee keeping linear motion in the slitting process, improve the accuracy of slitting size.

The utility model provides a tension adjusting mechanism for a roller, which relates to the technical field of clothes dryers and comprises a front plate, a rear plate, a base, the roller, a supporting seat, a motor frame, a motor, a tension spring and a synchronous belt. The base is connected between the bottom of the front plate and the bottom of the rear plate; the roller is rotationally connected between the front plate and the rear plate; the supporting seat is arranged on the base, the motor is arranged on the motor frame, and a driving shaft of the motor is connected with a synchronous belt wheel; the synchronous belt is connected to the synchronous belt wheel and the peripheral wall of the roller in a tensioning mode, one end of the motor frame is rotationally connected to the supporting base, and an adjusting rod is movably connected between the front plate and the rear plate. One end of the tension spring is connected to the adjusting rod, and the other end of the tension spring is connected to the motor frame; and the tension of the tension spring is adjusted by controlling the position of the adjusting rod. The adjustable clothes dryer has the advantages that the connecting strength and connectivity can be enhanced through the adjusting rod, and rotation adjustment can be performed through the adjusting rod, so that the tension of the tension spring is adjustable, and the overall clothes drying effect is finally ensured.

The utility model discloses a kind of wire guiding devices of hosiery machine, belong to the technical field of socks processing, including the fixed component for fixing spindle, further including the moving assembly for driving yarn spindle reciprocating motion up and down, further including the adjusting component for adjusting yarn tension;The fixed component includes center tube, the center tube is inserted in yarn spindle middle and with yarn spindle sliding fit;The utility model is rotated by setting rotary disc, simple structure, it is convenient and practical, yarn spindle can be driven to rotate with center tube when external force is pulled, realize stable wire supply, and by setting adjusting component, the friction between the abutting block and rotary disc can be adjusted, so as to realize the adjustment to silk thread tension, and avoid damage to silk thread, and by setting moving assembly, yarn spindle can be driven to move up and down when wire supply, so that wire outlet position is always horizontal with wire guide ring, avoid silk thread up and down swing, simultaneously reduce the friction between silk thread and wire guide ring.

The utility model provides an energy-saving heating device for polyamide yarn processing, which comprises a heating box, a yarn guide wheel group is movably connected in an inner cavity of the heating box, a heating plate is fixedly arranged in the inner cavity of the heating box, an adjusting assembly is arranged on the surface of the heating box, the adjusting assembly comprises a motor and a screw block, and the motor is connected with the screw block. The motor is located at the bottom of the heating box, the screw block is located in an inner cavity of the heating box, mounting rods are fixedly mounted on the left side and the right side of the screw block correspondingly, and sliding rods are fixedly mounted on the left side and the right side of the bottom of the inner cavity of the heating box correspondingly. By adjusting the height of the tensioning roller, the tension of the nylon yarn can be conveniently adjusted when the heated nylon yarn is conveyed, the situation that the tension of the nylon yarn is small in the conveying process and the nylon yarn falls off from the surface of the yarn guide wheel set is avoided, and the stability of the nylon yarn in the heating process is guaranteed.

The utility model relates to wooden box packing board processing technical field, especially a kind of wooden box packing board laminating device, including device box, the top of device box is equipped with rectangular groove, and the inside installation of rectangular groove has conveying roller barrel main body, the side wall of device box one side is equipped with fixed plate, and the side wall fixed mounting of fixed plate one side has first roller barrel main body, the outer wall of first roller barrel main body is equipped with laminating roll, the outer wall fixed mounting of first roller barrel main body has first limit plate, the outer wall of first roller barrel main body is equipped with second limit plate. The utility model first pass through the inner wall of second limit plate and outer thread thread connection, to pass through the rotation of second limit plate rotation in the outer wall sliding of first roller barrel main body, it is convenient to limit laminating roll by second limit plate and first limit plate mutual cooperation, to facilitate operator to install and disassemble laminating roll.

The utility model provides a kind of light supporting device for steeply inclined thin coal seam belongs to coal mining technical field, the light supporting device for steeply inclined thin coal seam includes side support frame in both sides, light supporting assembly is set between side support frame, light supporting assembly includes supporting bottom plate and supporting net in both sides, one side of supporting net is connected with steel chain, another side is connected with steel chain, electric winch is set on side support frame, one end of steel chain is connected with supporting net, and the other end is fixedly connected with the reel of electric winch by ring buckle;Side support frame includes stand, crossbeam and inclined strut, trapezoidal bottom plate is set in the bottom of stand, crossbeam is fixedly connected with stand by bolt, one end of inclined strut is connected with stand, and the other end is connected with bottom plate;Multiple groups of sliding slots are set on crossbeam, pulley is rotatably set in sliding slot, steel chain is wound around pulley;The utility model can solve the problem that dynamic support demand cannot be met.

The utility model discloses tin wire feeding tension adjusting equipment which comprises a base, a supporting plate is fixedly connected to the upper end of the base, a supporting frame is fixedly connected to the upper end of the supporting plate, open grooves are formed in the two sides of the supporting frame, a sliding groove is formed in the supporting plate, and a two-way screw is rotationally connected into the sliding groove. According to the tin wire tensioning device, the two sides of the tin wire penetrate through the upper sides of the first limiting idler wheels located on the two sides, the middle position of the tin wire penetrates through the upper side of the second limiting idler wheel, the tin wire between the first limiting idler wheels and the second limiting idler wheel penetrates through the lower side of the third limiting idler wheel, and tensioning of the tin wire can be detected through the arranged tension sensor; the distance between the lifting assemblies can be adjusted through the first servo motor and the two-way screw, the lifting assemblies can be driven through the power assembly, and therefore the height of the adjusting assembly can be adjusted, and the tension degree of the tin wire can be adjusted.

The utility model discloses a light protective wrister, which belongs to the technical field of wristers, and comprises a wrister main body and a medicine bag mounting mechanism, the wrister main body consists of a protective inner ring and an outer bandage, the outer wall of the protective inner ring is provided with a groove, one end of the outer bandage is fixedly connected to the inner wall of one side of the groove, and the medicine bag mounting mechanism is arranged on the wrister main body. The wrist guard body is used for installing and fixing the medicine bag, the wrist guard body is composed of the protection inner ring and the outer binding band, the protection inner ring is close to the wrist of a user, the outer binding band can conveniently adjust the tension degree of the protection inner ring to a certain degree, the use effect of the wrist guard body is improved, and the groove in the protection inner ring facilitates embedding of the outer binding band. A rehabilitation medicine bag can be conveniently installed on the wrist support body through the medicine bag installation mechanism, the wrist of the user can be treated through the installed rehabilitation medicine bag, and the functionality of the wrist support body is improved.

The utility model discloses a wide wall paper winding device relates to mechanical engineering technical field, the utility model discloses a base, the base top fixedly connected with the object table, be provided with the flattening mechanism on the object table, be provided with the adjusting mechanism on the object table, the flattening mechanism includes the connecting shell fixedly connected in the object table top, the utility model discloses a moving block has been set, and the thickness of wall paper self will slightly push up gyro wheel no.

The utility model discloses a kind of agricultural machinery belt belt tensioning rod device, it is related to tensioning rod device technical field, comprising: support rod, set in the tensioning wheel, with tensioning wheel rotary connection;Support hole, be set up in the support rod;Adjusting plate, have two, and two adjusting plates symmetrically set in the first support groove, with first support groove sliding connection, and with the support plate is attached;By setting adjusting mechanism and adjusting plate, the spacing between support plate is adjusted, so that the tension of support spring is adjusted, it is convenient to tension adjusting for belt, avoid that belt transmission produces slack;By setting clamping mechanism and support hole, it is realized to the quick installation of tensioning wheel, it is convenient to replace and use for tensioning wheel.

The utility model relates to a tension device of a slitting machine, which comprises an upper pressing plate and a lower pressing plate, a copper strip is pressed in the upper pressing plate and the lower pressing plate from the upper side and the lower side, the lower pressing plate is arranged on a base, and an upper tension support is arranged on the base. The upper pressing plate is arranged at the end of a push rod of the first servo electric cylinder, a guide shaft penetrating through the horizontal plate in a sliding mode is arranged at the upper end of the upper pressing plate, and wool felts are arranged on the opposite sides of the upper pressing plate and the lower pressing plate respectively. The first servo electric cylinder drives the upper pressing plate to move up and down, the pressure of the upper pressing plate and the lower pressing plate on the copper strip can be accurately controlled, manual adjustment is not needed, and therefore adjustment of the tension of the copper strip is achieved.

The utility model provides a special-shaped packaging goods sorting system, which comprises a mounting bracket, an identification control unit and a plurality of sorting units, each sorting unit comprises a lower swing conveying device and a belt conveyor, the plurality of lower swing conveying devices are erected on the mounting bracket, and each lower swing conveying device comprises a plane power section, a lower swing section, a telescopic adjusting device and a conveying belt, the lower swing section is rotationally connected with the plane power section, the telescopic adjusting device is connected with the plane power section and the lower swing section, the conveying belt is wound around the plane power section and the lower swing section, and each belt conveyor is located at the end, away from the plane power section, of the lower swing section and located below the mounting support. The identification control unit comprises a PLC control unit and a plurality of scanning devices, the scanning devices are connected with the plane power section, the PLC control unit is electrically connected with the scanning devices and the telescopic adjusting device, and the technical problem that in the prior art, sorting equipment cannot sort goods which are large in size, heavy or packaged in a special shape is solved.

The utility model belongs to the field of traction devices, and particularly relates to a tow traction device for flame-retardant fiber processing, which comprises a bottom plate, the bottom of the bottom plate is fixedly connected with a plurality of uniformly distributed support rods, the bottoms of the support rods are provided with anti-slip mats, the upper end of the bottom plate is fixedly connected with two symmetrically distributed rotating frames, and the two rotating frames are fixedly connected with two ends of the bottom plate. A guide roller is rotationally connected to the inner side of the rotating frame in a sleeving mode, a fixing frame is fixedly connected to the top of the bottom plate, a connecting frame is slidably connected to the inner side of the fixing frame in a sleeving mode, and a connecting shaft is movably connected to the interior of the connecting frame in a sleeving mode. According to the utility model, through the design of the guide roller, the movement of the tows can be guided, the tows can be supported in an auxiliary manner under the action of the support roller, and the support roller is an elastic support, so that the support roller can correspondingly move in the vertical direction when being stressed, and the breakage and damage of the tows can be avoided when the tows are supported.

The utility model belongs to the field of ampoule bottle production, particularly relates to an ampoule bottle up-and-down turnover mechanism, and provides the following scheme aiming at the problems that frequent shutdown adjustment is needed, the manual intervention cost is high and secondary pollution is easily caused in the production process due to the fact that an existing mechanism cannot realize continuous and automatic turnover of row ampoule bottles, the ampoule bottle up-and-down turnover mechanism comprises a fixed frame, two connecting frames are symmetrically and fixedly arranged on one side of the fixing frame, and a motor is fixedly arranged at the top of the fixing frame; the fixing frame and the two connecting frames are provided with overturning assemblies, and the overturning assemblies are used for overturning and conveying the ampoule bottles. According to the utility model, through the arrangement of the overturning assembly, the automatic up-and-down overturning function of the row ampoule bottles in the connection transition of production steps is realized, so that the process requirements of subsequent detection and packaging links are effectively met, and the continuity and the automation degree of a production line are also remarkably improved; meanwhile, pollution risks and efficiency bottlenecks possibly caused by manual overturning are avoided.

The application discloses an amphibious operation vehicle plate mud breaking device, and belongs to amphibious cleaning operation mechanical equipment. The device is composed of a connecting support, a driving unit and a rotary cutting roller, wherein the connecting support is used for connecting an amphibious operation vehicle body or a working arm; the driving unit comprises a mounting base, left and right side plates, a driving motor, a chain transmission mechanism and the like; a motor mounting plate is changed in position through an adjusting screw to tension the chain; a sealing plate is quickly wrapped around a spacer to form a sealed transmission space through buckles and hasp lock rings; the rotary cutting roller is a left-right symmetrical regular polygon hollow structure, equal-distance cutting blades with staggered bending directions at the ends are mounted on the rotary cutting roller, sealing rubber sheets are arranged at both ends of the rotary cutting roller, and an inner center pipe is hermetically welded with a side sealing plate to form a sealed cavity. The application can forcibly pre-cut and break the riverbed plate mud, so that the spiral mud pump can be smoothly sucked and transported, and has the characteristics of lightweight structure, convenient maintenance, no cutting blind area and small rotary resistance.

The utility model belongs to the field of pay-off supports, and particularly relates to a power cable coil pay-off support which comprises a bottom plate, moving wheels are arranged at the bottom of the bottom plate, a handrail is fixedly connected to the upper end of the bottom plate, two supports which are symmetrically distributed are fixedly connected to the top of the bottom plate, winding drums are rotationally connected into the supports, and the winding drums are fixedly connected to the bottom of the bottom plate. A cable is wound around the outer side of the winding drum, and the outer side of the winding drum is rotationally connected with a mounting base. Through the design of the support and the installation base, the winding drum can be rotationally supported, in the cable paying-off process, when the handle is rotated to drive the rotating base to rotate, threaded movement of the screw can be achieved, the screw can drive the connecting frame to move in the vertical direction, the connecting frame can drive the guide rod to slide along the fixing frame, and the cable paying-off effect is achieved. And the supporting roller moves upwards to support the cable, the tension force of the cable during paying off can be adjusted, and the paying off effect can be improved.

This utility model relates to the field of valve body connection technology and discloses an elastic anti-vibration motor-valve body connection mechanism, including a first connection end and a second connection end. A first bellows is fixedly connected to the side wall of the first connection end. A connecting ring is fixedly connected to the end of the first bellows opposite to the first connection end, and a second bellows is fixedly connected to the end of the connecting ring opposite to the first bellows. When the motor or valve body vibrates, the first and second bellows absorb vibration energy through their own elastic deformation, reducing vibration transmission. The corrugated structure of the first and second bellows allows them to undergo elastic deformation under external force, converting mechanical energy into elastic potential energy, thus playing a buffering role. The connecting ring connects the two bellows, enabling them to work together and improving the elastic connection effect.

The utility model relates to the technical field of non - woven fabric winding machine, and disclose adjustable tension non - woven fabric winding machine, include: base, the base is fixedly connected with two groups of symmetrical setting support plate, the support plate is rotatably connected with the rotating shaft, the rotating shaft is fixedly connected with the material roll, the support plate is opened with the sliding slot, the sliding groove is slidably connected with the sliding block in, two groups of sliding blocks are connected with the cloth pressure member for extruding non - woven fabric to the non - woven fabric, and the cloth pressure member is installed with the moving part, the utility model discloses be provided with cloth pressure member and moving part, through the effect of cloth pressure member extruding non - woven fabric, then when needing to adjust the tension of non - woven fabric, the moving part is driven to move down cloth pressure member through the setting, and the extrusion pressure of cloth pressure member to cloth is increased through the moving down of cloth pressure member, make the tension of non - woven fabric increase, and then adjust the tension, and then solve the problem that the winding machine cannot adjust the tension of non - woven fabric when discharging or winding non - woven fabric in prior art.

The utility model provides a horizontal light control four -axle material collecting machine of layering staggered structure relates to material collecting equipment technical field, including material collecting machine body, be provided with a plurality of mounting pole on the material collecting machine body, install the mounting frame on the mounting pole, the top of mounting frame is connected with first motor fixedly, the output shaft of first motor is connected with driving wheel fixedly, driving wheel transmission connection is passed to the belt with the driven wheel, the driven wheel fixed connection is in one end of connecting shaft, the other end fixed connection of connecting shaft has eccentric wheel, this horizontal light control four -axle material collecting machine of layering staggered structure, through the material collecting disc of turnover arm one side carries out the material collecting work, makes the material collecting disc of turnover arm both ends to change position, thereby greatly reduces the downtime of material collecting machine, improves its operation efficiency, through fixed block, clamping spring, sliding block and clamping plate, the material collecting disc can according to the thickness and width of the material to be processed material belt, adjusts material belt tightness.

The utility model relates to the technical field of coating machines, and discloses a multi-station self-adaptive flexible material coating machine which comprises a working table, a plurality of groups of supporting legs are fixedly connected to the surface of the working table, three groups of first coating rollers are rotatably connected to one sides of the plurality of groups of supporting legs, and a top plate is fixedly connected to the top surface of the working table. According to the multi-station self-adaptive flexible material coating machine, through the arrangement of a first coating roller and an adjusting assembly, when the multi-station self-adaptive flexible material coating machine is used, a flexible material is placed on the first coating roller, a hydraulic rod is started, the hydraulic rod moves to drive a rotating block to move, and the rotating block moves to drive a second coating roller to move; when the second coating roller moves, the flexible material on the first coating roller is extruded, so that the tension of the flexible material on the first coating roller can be adjusted, the coating can be uniformly distributed on the surface of the flexible material, the problems of non-uniform coating thickness, coating missing and the like are avoided, and the quality and the performance of a product are improved.

The utility model relates to the technical field of fertilizer conveying devices, and discloses a fertilizer conveying device of a chain type fertilizer smoothening machine, which comprises a chain type conveying belt, rotating shafts are rotatably connected to the interiors of the two ends of the chain type conveying belt, a supporting frame is rotatably connected to the surfaces of the rotating shafts, and an adjusting assembly is in threaded connection to the middle of the supporting frame. A supporting frame is slidably connected to the surface of the rotating shaft, two pushing assemblies are slidably connected to the bottom of the supporting frame, rotating rods are sleeved with the pushing assemblies, the adjusting assembly comprises a threaded rod in threaded connection to the middle of the supporting frame, and a rotating disc is fixedly connected to one end of the threaded rod. According to the fertilizer conveying device of the chain type fertilizer smoothening machine, by arranging the adjusting assembly, the effect of adjusting the tensioning degree of the chain type conveying belt is achieved, it is ensured that the chain type conveying belt is kept in a proper tensioning state in the running process, vibration and shaking are reduced, and therefore the conveying stability and accuracy are improved.

The present invention relates to an electro-discharge machining device, which comprises at least a carrier and an electro-discharge machining unit. The carrier is used to carry at least one workpiece to be machined. The electro-discharge machining unit comprises an electrode, a jig and a power supply unit. When the electro-discharge machining unit performs an electro-discharge machining process on a machining target area of the workpiece to be machined along a machining travel direction, a discharge section of the electrode moves relative to the machining target area of the workpiece to be machined. The present invention can improve the machining process, save the overall machining time and save the time required for replacing the electrode.

The utility model belongs to the technical field of printing machines, and particularly relates to an adjustable tensioning type printing machine which comprises a printing machine body and a supporting plate, the supporting plate is fixedly connected to the printing machine body, two symmetrically-arranged first sliding grooves are formed in the inner wall of the supporting plate, sliding blocks are connected into the first sliding grooves in a sliding mode, and first threaded rods are connected into the sliding blocks in a threaded mode. The first threaded rod is located in the first sliding groove and rotationally connected with the first sliding groove, a pressing rod is fixedly connected between the two sliding blocks, and the pressing rod is attached to paper on the printing machine. The turntable is rotationally connected to the top surface of the supporting plate; the transmission assembly is located in the supporting plate and used for driving the two first threaded rods to rotate; the paper tension adjusting device solves the problems that when a printing machine is used, the tension degree of paper cannot be adjusted, when the tension of the paper is too small, printing materials are likely to be loosened and even wrinkled, the surfaces of printed matter are uneven, and the product quality is affected.